how do i find out what bass i got?

Got a strange dilema and was wondering if someone could help me out!!
I've been given a fender precision bass by someone, which ultimately is cool. However there is a problem. I actually wanna sell it (i prefer my bass and need some cash towards a decent amp) but although i know it's a precision I'm having trouble finding out how old it is, and whether or not it's a japanese one. It's got a telecaster shape body (and it says "crafted in japan" on the back so i guess its japanese) and i've looked everywhere and just can't find anything like it?!!!!!!
PLEASE HELP ME!!! cos it's really starting to get on me nerves!!